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Create an index on a huge MySQL production table without table locking
...original table so that changes are kept in-sync with the copy
Copy rows in batches from original table.
Move original table out of the way and replace with new table.
Drop old table.
I've never tried the tool myself. YMMV
RDS
I'm currently using MySQL through Amazon's RDS. It's a really nifty s...
Using the rJava package on Win7 64 bit with R
...e should be reported to rJava as a bug.
– Apprentice Queue
May 23 '13 at 2:12
2
This really did t...
How to resolve merge conflicts in Git?
...ered Oct 2 '08 at 12:41
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How to download and save a file from Internet using Java?
There is an online file (such as http://www.example.com/information.asp ) I need to grab and save to a directory. I know there are several methods for grabbing and reading online files (URLs) line-by-line, but is there a way to just download and save the file using Java?
...
How to run multiple DOS commands in parallel?
...nd prompt and allow you to run multiple commands at the same time from one batch file.
Hope this helps!
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Why can't I use the 'await' operator within the body of a lock statement?
...nature of lock/Monitor would be a bigger part of the problem. That is, you queue two tasks to the thread pool which lock(), that in a synchronous world would execute on separate threads. But now with await (if allowed I mean) you could have two tasks executing within the lock block because the threa...
How do I set the version information for an existing .exe, .dll?
...
While it's not a batch process, Visual Studio can also add/edit file resources.
Just use File->Open->File on the .EXE or .DLL. This is handy for fixing version information post-build, or adding it to files that don't have these reso...
Equivalent of “continue” in Ruby
In C and many other languages, there is a continue keyword that, when used inside of a loop, jumps to the next iteration of the loop. Is there any equivalent of this continue keyword in Ruby?
...
How to report an error from a SQL Server user-defined function
...of. Execution continues on the
next line, unless the error aborted
the batch. In either case, @@error is
0. Thus, there is no way to detect that an error occurred in a function
from T-SQL.
The problem does not appear with
inline table-functions, since an
inline table-valued functio...
Easily measure elapsed time
... and gives the real time, not the CPU time. I tested it by placing SleepEx(5000,0) in place of //Perform time-consuming operation and difference of after and before was almost 5 sec.
– Ruchir
Jul 31 '15 at 7:04